CN113650405B - Packaging equipment and packaging method for MiniLED - Google Patents
Packaging equipment and packaging method for MiniLED Download PDFInfo
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- CN113650405B CN113650405B CN202110760536.3A CN202110760536A CN113650405B CN 113650405 B CN113650405 B CN 113650405B CN 202110760536 A CN202110760536 A CN 202110760536A CN 113650405 B CN113650405 B CN 113650405B
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- 238000004806 packaging method and process Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 55
- 239000010959 steel Substances 0.000 claims abstract description 55
- 229910000679 solder Inorganic materials 0.000 claims abstract description 34
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 238000007790 scraping Methods 0.000 claims description 67
- 239000006071 cream Substances 0.000 claims description 31
- 239000000758 substrate Substances 0.000 claims description 31
- 230000007306 turnover Effects 0.000 claims description 12
- 238000005538 encapsulation Methods 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 7
- 239000004065 semiconductor Substances 0.000 abstract description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 8
- 239000011505 plaster Substances 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/08—Machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
- B41F15/16—Printing tables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
- B41F15/40—Inking units
- B41F15/42—Inking units comprising squeegees or doctors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/62—Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2215/00—Screen printing machines
- B41P2215/10—Screen printing machines characterised by their constructional features
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2217/00—Printing machines of special types or for particular purposes
- B41P2217/50—Printing presses for particular purposes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The application discloses a packaging device and a packaging method for a MiniLED, which relate to the technical field of semiconductor chips and reduce the waste of solder paste; the machine frame is located the top level of steel mesh and is provided with the guide rail, install scraper mechanism and drive scraper mechanism along the actuating mechanism of guide rail removal on the guide rail. The application can reduce the waste of the solder paste and improve the utilization rate of the solder paste.
Description
Technical Field
The present application relates to the field of semiconductor chip technology, and in particular, to a packaging apparatus and a packaging method for MiniLED.
Background
MiniLED is one type of LED, meaning an LED with a die size of about 100 and 200 microns. The MiniLED package refers to a package of a light emitting chip, and is generally packaged by using an LED package printer.
When packaging, a corresponding substrate is required to be selected, and a plurality of groups of welding pads are arranged on the substrate; then, the substrate is attached to the lower portion of a steel mesh of a packaging printing machine, and the bonding pads on the substrate are aligned with the holes of the steel mesh; then pouring solder paste on the steel mesh, and scraping the steel mesh back and forth by using a scraper so that the solder paste falls on the bonding pad through the holes of the steel mesh; and taking out the substrate, and correspondingly placing the MiniLED at the bonding pad of the substrate so that the MiniLED is fixed on the substrate.
Chinese patent document CN201521120311.8 in related art discloses an LED packaging printer, comprising: the air cylinder device comprises a rack, a sliding rail on the rack and a workbench clamped on the sliding rail, wherein an outer frame is arranged on the workbench, and second air cylinders are arranged on two sides of the outer frame; a platform is arranged above the outer frame, and an LED substrate is placed on the platform; the machine frame is provided with an outer cover, a guide rail is arranged in the outer cover, the guide rail is provided with a scraper mechanism and a driving mechanism, and a steel mesh is arranged below the scraper mechanism; the inner part of the outer cover is provided with an exhaust hole which is communicated with an external vacuum pump through a pipeline; scraper mechanism includes first cylinder and connects the scraper of this first cylinder, and the scraper has 2, the vertical setting of scraper, scraper and first cylinder are located the mounting panel, and this mounting panel is installed on the guide rail, and this mounting panel drives through drive arrangement.
With respect to the related art in the above, the inventors consider that: when the scraper scrapes the steel mesh back and forth, the tin cream on the steel mesh has the marginal position that the part slided to the steel mesh from the both sides of scraper, and the marginal position of steel mesh has broken away from the region of scraper motion for the tin cream in this region can't be utilized, thereby causes the waste of tin cream.
Disclosure of Invention
In order to reduce waste of solder paste, the application provides a packaging device and a packaging method for MiniLED.
In a first aspect, the present application provides a packaging apparatus for a MiniLED, which adopts the following technical scheme:
the encapsulation equipment for the MiniLED comprises an encapsulation printer, wherein the encapsulation printer comprises a rack, a steel mesh horizontally arranged in the rack and a workbench horizontally arranged below the steel mesh in a sliding manner, and a platform for placing a substrate is arranged on the workbench; the rack is horizontally provided with a guide rail above the steel mesh, and the guide rail is provided with a scraper mechanism and a driving mechanism for driving the scraper mechanism to move along the guide rail;
the scraper mechanism comprises a sliding plate, a mounting plate horizontally arranged below the sliding plate and two scraper plates vertically arranged on the lower end face of the mounting plate at intervals, the two scraper plates are parallel to each other, one end of the sliding plate close to the mounting plate is fixedly connected with an air cylinder, and a piston rod of the air cylinder is vertically and fixedly connected with one side of the mounting plate close to the sliding plate;
the scraper plate comprises two scraper plates which are spliced in half, a scraper is arranged on the lower end face of each scraper plate, one end, close to each scraper plate, of each scraper plate is vertically connected with a telescopic rod extending towards the direction of the other scraper plate, each telescopic rod comprises a sleeve fixedly connected with the corresponding scraper plate and an inner rod connected in the corresponding sleeve in a sliding mode, an elastic part used for driving the inner rod to stretch out is arranged in each sleeve, and a limiting structure used for preventing the inner rod from separating from the corresponding sleeve is arranged between each sleeve and the corresponding inner rod;
two limiting strips vertical to the guide rail are arranged on the lower end face of the mounting plate; the two scraper plates are arranged between the two limiting strips;
one end of the inner rod is vertically connected with a rotating rod extending upwards, the rotating rod is rotationally connected with the mounting plate, and the mounting plate is provided with a turnover mechanism for driving the two rotating rods on the scraper plate to synchronously rotate; the turnover mechanism can drive the two scraping plates on the scraping plate to rotate to a paste scraping state in which the two scraping plates are in parallel and abutted against the limiting strip and to rotate to a paste collecting state in which the two scraping plates are in vertical abutment against the other limiting strip; the turnover mechanism comprises two gear sets, each gear set comprises a driving gear and a driven gear, the driving gears and the driven gears are the same in size, the driving gears and the driven gears are respectively and fixedly connected with the two rotating rods on the scraper plate, and the driven gears are meshed with the driving gears; the turnover mechanism also comprises a driving gear and a power source for driving the driving gear to rotate, and the driving gear is respectively meshed with driving gears of the two gear sets; when the two scraping plates on one scraping plate are in a paste scraping state, the two scraping plates on the other scraping plate are in a paste collecting state, and the two scraping plates in the paste collecting state are abutted to one side, far away from the two scraping plates in the paste scraping state.
By adopting the technical scheme, because the scraper blades on the two scraper blades are respectively in the paste collecting state and the paste scraping state, when the scraper blades in the paste scraping state scrape solder paste, the scraper blades and the scraper blades in the paste collecting state can draw the solder paste in the paste scraping path, so that the solder paste is not easy to separate from the paste scraping path, and the waste of the solder paste is reduced.
Optionally, one side of the scraper close to the telescopic rod extends horizontally with two support rods, a plaster bearing plate is rotatably connected between the two support rods, the paste bearing plate can be turned upwards to a paste bearing state horizontally propped against the scraper and turned downwards to a paste outlet state separated from the scraper, a long hole penetrating through the scraper is arranged in the scraper, a pry bar is rotatably connected in the long hole, one end of the pry bar, which extends into the inner side of the scraper, is rotatably connected with a connecting rod, one end of the connecting rod, which is far away from the pry bar, is rotatably connected with one end of the plaster bearing plate, which is close to the scraper, one end of the pry bar, which extends out of the scraper, is sleeved with a sleeve, one side of the scraper, which is far away from the connecting rod, is provided with a push rod which slides up and down along the height direction of the scraper, one end of the push rod is rotatably connected with the outer side of the sleeve, and the scraper is provided with a driving piece for driving one end of the push rod to always abut against the lower end face of the sliding plate; when the mounting plate moves downwards until the scraper abuts against the steel mesh, the push rod drives the sleeve to move upwards and enables the paste bearing plate to be in a paste outlet state.
By adopting the technical scheme, when the scraper is separated from the steel mesh, the paste bearing plate can rotate to be in a paste bearing state against the scraper under the action of the connecting rod, so that part of the solder paste is borne on the paste bearing plate; when the scraper of receiving the cream state shifts to scraping the cream state and with the steel mesh butt, hold the cream board and be in out the cream state once more for the tin cream that holds on the cream board can fall back to the steel mesh along the cream board that holds of slope, makes the part be in the tin cream of scraping cream route edge, can be brought back to near the position of scraping cream route middle part by holding the cream board, makes the more even of distribution of tin cream.
Optionally, a protruding ring is arranged on the outer peripheral side of one end, away from the rotating rod, of the inner rod, the sleeve comprises a sliding groove for the protruding ring to be in sliding connection, and the limiting structure is a limiting ring which is arranged on a groove opening of the sliding groove and used for preventing the protruding ring from being separated from the sliding groove.
By adopting the technical scheme, the inner rod can be prevented from being separated from the sleeve by using the arrangement of the limiting ring.
Optionally, the elastic member is a first spring installed in the sliding groove, one end of the first spring abuts against the groove bottom of the sliding groove, and the other end of the first spring abuts against the inner rod.
Through adopting above-mentioned technical scheme, adopt first spring as the elastic component, have simple structure, the stable advantage of atress.
Optionally, one side of the scraper far away from the connecting rod is provided with a supporting block, and a through hole for the push rod to be connected in a sliding manner is arranged on the supporting block in a penetrating manner.
Through adopting above-mentioned technical scheme, the setting of supporting shoe and through-hole can make the push rod carry out the slippage from top to bottom along vertical direction.
Optionally, a support ring is arranged on the outer side of the push rod, the driving member is a second spring sleeved on the push rod, one end of the second spring abuts against the support block, the other end of the second spring abuts against the support ring, and the second spring always pushes the support ring to move towards the direction of the sliding plate.
Through adopting above-mentioned technical scheme, adopt the second spring as the driving piece, have simple structure, the stable advantage of atress.
Optionally, one end integrated into one piece that two scrapers of scraper board kept away from mutually has oblique stifled sword, the oblique stifled sword of scraping the cream state can offset with the scraper inboard that is in receiving the cream state for the gap between the shutoff two states scraper.
Through adopting above-mentioned technical scheme, the utilization ratio of tin cream can be improved to the setting of stifled sword to one side.
In a second aspect, the present application provides a MiniLED packaging method, which adopts the following technical scheme:
a MiniLED packaging method comprises the packaging equipment for the MiniLED, and comprises the following steps:
the method comprises the following steps: placing the substrate on a platform of a workbench, and moving the workbench until the substrate is attached below the steel mesh so that the meshes of the steel mesh are aligned with the bonding pads of the substrate;
step two: pouring solder paste onto a steel mesh, starting a cylinder, enabling a scraper to abut against the steel mesh, utilizing a scraper in a paste scraping state to scrape the solder paste of the steel mesh towards one direction, enabling the solder paste to fall onto a basic bonding pad through the steel mesh, starting the cylinder again after primary paste scraping is completed, enabling the cylinder to drive a mounting plate to move upwards, enabling the scraper to move above the steel mesh, driving a driving gear to rotate through a power source, enabling the driving gear to drive two sets of gear sets to rotate, enabling the two scrapers in the paste scraping state to be in a paste collecting state, and enabling the two scrapers in the paste collecting state to be in the paste scraping state;
step three: and taking out the substrate, and correspondingly placing the MiniLED at the bonding pad of the substrate so that the MiniLED is connected with the substrate.
In summary, the present application includes at least one of the following benefits:
1. the method and the device can reduce the waste of the solder paste and improve the utilization rate of the solder paste;
2. through the setting of holding the cream board, can make more even that the tin cream distributes.
Drawings
FIG. 1 is a schematic view of the overall structure of the present embodiment;
FIG. 2 is a schematic sectional view of the present embodiment;
FIG. 3 is a schematic structural diagram of the present embodiment showing the internal structure of the protective cover;
FIG. 4 is a schematic structural view of the slide plate according to the present embodiment;
FIG. 5 is a schematic structural view of a cylinder embodying the present embodiment;
FIG. 6 is a schematic structural view of a scraper plate embodying the present embodiment;
FIG. 7 is a schematic sectional view of the squeegee of the embodiment;
FIG. 8 is a schematic structural view of a gear unit embodying the present embodiment;
FIG. 9 is a schematic structural view of a putter embodying the present embodiment;
fig. 10 is a schematic sectional view of the embodiment embodying the pry bar.
Description of reference numerals: 1. a frame; 2. a steel mesh; 3. a work table; 4. a platform; 5. a lifting cylinder; 6. a cylinder; 7. a transmission belt; 8. a protective cover; 9. a side plate; 10. a back plate; 11. a front plate; 12. a top plate; 13. a guide rail; 14. a slide plate; 15. mounting a plate; 16. a scraper plate; 17. a squeegee; 18. a scraper; 19. a slider; 20. a slideway; 21. a lead screw; 22. a synchronous motor; 23. a telescopic rod; 24. a sleeve; 25. an inner rod; 26. a first spring; 27. a second spring; 28. a convex ring; 29. a chute; 30. a limiting ring; 31. a rotating rod; 32. a limiting strip; 33. a driving gear; 34. a driven gear; 35. a power motor; 36. a support frame; 37. a drive gear; 38. an inclined blocking knife; 39. a support bar; 40. a paste bearing plate; 41. a strip hole; 42. a pry bar; 43. a sleeve; 44. a push rod; 45. a connecting rod; 46. a through hole; 47. a support ring; 48. and (7) a supporting block.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
The embodiment of the application discloses a packaging device for a MiniLED. Referring to fig. 1 and 2, the encapsulation device for MiniLED includes an encapsulation printer, the encapsulation printer includes a frame 1, a steel mesh 2 horizontally installed in the frame 1, a workbench 3 horizontally sliding below the steel mesh 2, a platform 4 in a horizontal state installed on the workbench 3, a lifting cylinder 5 provided between the workbench 3 and the platform 4, when a substrate is placed on the platform 4, the substrate on the platform 4 can be attached to the lower end of the steel mesh 2 by the extension and retraction of a piston rod of the lifting cylinder 5. Specifically, a track for the workbench 3 to horizontally slide is arranged below the steel mesh 2, a transmission belt 7 is arranged in the track, and the workbench 3 can reach or leave the lower part of the steel mesh 2 through the transmission belt 7.
Referring to fig. 2 and 3, a protective cover 8 is arranged at the upper end of the steel mesh 2 of the frame 1, the protective cover 8 includes two parallel side plates 9, a rear plate 10 arranged between the two side plates 9, and a top plate 12 sealed at the upper ends of the two side plates 9 and the rear plate 10, and one end of the top plate 12 far away from the rear plate 10 is hinged with an openable front plate 11.
Referring to fig. 3, a horizontally extending guide rail 13 is provided on a side of the two side plates 9, and a scraper mechanism and a drive mechanism are provided between the two guide rails 13.
Referring to fig. 4 and 5, the scraper mechanism includes a sliding plate 14 slidably connected between the two guide rails 13, a mounting plate 15 horizontally disposed below the sliding plate 14, and two scraper plates 16 vertically disposed at intervals on the lower end surface of the mounting plate 15. An air cylinder 6 is arranged between the sliding plate 14 and the mounting plate 15 and used for adjusting the distance between the mounting plate 15 and the sliding plate 14. Specifically, the cylinder body of the cylinder 6 is fixed on the lower end face of the sliding plate 14, and the piston rod of the cylinder 6 is vertically welded with the upper end face of the mounting plate 15.
Referring to fig. 3 and 4, the sliding blocks 19 are welded on two opposite sides of the sliding plate 14, the guide rails 13 include a slide way 20 for the sliding connection of the sliding blocks 19, a lead screw 21 is rotatably connected in the slide way 20, one end of each of the two guide rails 13 is fixedly connected with a synchronous motor 22 which is fixedly connected with the lead screw 21 and used for driving the lead screw 21 to rotate, and the two sliding blocks 19 are respectively in threaded connection with one lead screw 21. The sliding plate 14 can slide in the slideway 20 to make the scraper plate 16 on the mounting plate 15 scrape the solder paste on the steel mesh 2 back and forth.
Referring to fig. 6 and 7, the scraper plate 16 includes two scrapers 17 spliced in half, a scraper 18 is disposed on the lower end surface of each scraper 17, and a telescopic rod 23 is vertically connected to the side, close to the two scrapers 17. Specifically, the telescopic rod 23 comprises a sleeve 24 and an inner rod 25 slidably connected in the sleeve 24, one end of the sleeve 24 is fixedly connected with the scraper 17, and an elastic member for driving the inner rod 25 to extend is arranged in the sleeve 43.
Further, referring to fig. 7 and 8, a protruding ring 28 is disposed on the outer periphery of one end of the inner rod 25, the sleeve 43 includes a sliding slot 29 for slidably connecting the protruding ring 28, the elastic member is a first spring 26 mounted in the sliding slot 29, one end of the first spring 26 abuts against the inner rod 25, and the other end abuts against the bottom of the sliding slot 29. Without the external force, the first spring 26 drives the inner rod 25 out of the slide slot 29. The notch of the sliding groove 29 is in interference clamping connection with a limiting ring 30 for preventing the convex ring 28 from separating from the sliding groove 29, and the limiting ring 30 forms a limiting structure for preventing the inner rod 25 from separating from the sleeve 24.
Referring to fig. 7 and 8, a vertically and upwardly extending rotating rod 31 is vertically welded to one end of the inner rod 25 extending out of the sliding groove 29, one end of the rotating rod 31 penetrates through the upper end of the mounting plate 15, and one end of the rotating rod 31 extending out of the upper end face of the mounting plate 15 is rotatably connected with the mounting plate 15 through a fixedly connected bearing. The mounting plate 15 is provided with a turnover mechanism for driving the two rotating rods 31 of the same scraper blade 16 to rotate.
Referring to fig. 6 and 8, the lower end surface of the mounting plate 15 is provided with two parallel limiting strips 32, and the two limiting strips 32 are perpendicular to the sliding direction of the mounting plate 15. And the two scraper plates 16 are located between the two stop strips 32. The turnover mechanism can drive the two scrapers 17 on the scraper plate 16 to rotate to a paste scraping state in which the scrapers 17 are in parallel abutting against the limiting strips 32 and to a paste collecting state in which the scrapers 17 are in vertical abutting against the other limiting strips 32; when the two scraping plates 17 on one scraping plate 16 are in the paste scraping state, the two scraping plates 17 on the other scraping plate 16 are in the paste collecting state, and the two scraping plates 17 in the paste collecting state are abutted against the side, away from the two scraping plates 17 in the paste scraping state. When the scraper 17 is in the paste scraping state, the telescopic rod 23 on the scraper 17 is in the contraction state.
Referring to fig. 6 and 8, the turnover mechanism includes two gear sets, each gear set includes a driving gear 33 and a driven gear 34, the driving gear 33 and the driven gear 34 are respectively and coaxially and fixedly connected with two ends of the scraper plate 16, and the driven gear 34 and the driving gear 33 in the same gear set are meshed with each other, so that the two scrapers 17 of the scraper plate 16 rotate synchronously.
Referring to fig. 6 and 8, the turnover mechanism further includes a driving gear 37 and a power source for driving the driving gear 37 to rotate, in this embodiment, the power source is a power motor 35. Mounting panel 15 welding has support 36, and power motor 35 vertically fixes on support 36, and power motor 35's output shaft extends towards the direction of perpendicular to mounting panel 15, and drive gear 37 coaxial fastening is in power motor 35's output shaft tip, and drive gear 37 meshes with two driving gear 33 each other respectively for drive two driving gear 33 synchronous rotations.
When two scraper blades 17 on one of the scraper plates 16 are in the paste scraping state, the two scraper blades 17 in the paste collecting state are abutted against one side, far away from the two scraper blades 17 in the paste scraping state, so that when the scraper blades 17 in the paste scraping state scrape paste, the two scraper blades 17 in the paste collecting state can prevent the solder paste from being discharged towards the two ends of the scraper plates 16, and the scraper blades 18 always collect the paste and scrape the paste through scraping the paste surface, thereby reducing the waste of the solder paste and saving the cost. Meanwhile, the inclined blocking knife 38 is integrally formed at the end, away from the two scrapers 18, of the scraper plate 16, and when the scraper 18 in the paste collection state abuts against the outer end of the scraper 17 in the paste collection state, the inclined blocking knife 38 in the paste collection state can abut against the inner side of the scraper 18 in the paste collection state, that is, the inclined blocking knife 38 can block a gap generated between the two scrapers 18, so that solder paste is prevented from being discharged from the gap between the two scrapers 18.
Referring to fig. 9 and 10, one side of the scraper 18 close to the telescopic rod 23 is horizontally extended with two support rods 39, a plaster bearing plate 40 is arranged between the two support rods 39, the plaster bearing plate 40 is of a rectangular structure, two short sides of the plaster bearing plate 40 are coaxially provided with rotating shafts, and the plaster bearing plate 40 is rotatably connected between the two support rods 39 through the rotating shafts. The paste bearing plate 40 can be turned upwards to a paste bearing state horizontally abutted against the scraper 18 and turned downwards to a paste outlet state separated from the scraper 18, a long hole 41 penetrating through the scraper 17 is formed in the scraper 17, and the long hole 41 extends vertically. A pry bar 42 is rotatably connected in the strip hole 41, one end of the pry bar 42 extending into the inner side of the scraper 17 is rotatably connected with a connecting rod 45, and one end, far away from the pry bar 42, of the connecting rod 45 is rotatably connected with one end, close to the scraper 18, of the plaster bearing plate 40. When the connecting rod 45 moves upward, the connecting rod 45 can move the paste bearing plate 40 to a paste bearing state.
Referring to fig. 9 and 10, a sleeve 43 is sleeved on one end of the pry bar 42 extending out of the scraper 17, a push rod 44 sliding up and down along the height direction of the scraper 17 is arranged on one side of the scraper 17 far away from the connecting rod 45, and one end of the push rod 44 is rotatably connected with the outer side of the sleeve 43. The scraper 17 is further provided with a driving member for driving one end of the push rod 44 to always abut against the lower end surface of the slide plate 14.
Further, referring to fig. 9 and 10, a supporting block 48 is vertically arranged on one side of the scraper 17 away from the connecting rod 45, a through hole 46 is formed in the supporting block 48, and the push rod 44 is vertically slidably connected in the through hole 46. A support ring 47 is arranged on the outer periphery of the push rod 44, the driving member is a second spring 27 sleeved on the push rod 44, one end of the second spring 27 is abutted against the support ring 47, and the other end is abutted against the support block 48. Without the action of external force, the second spring 27 can move upward by pushing the support ring 47 so that the upper end of the push rod 44 abuts against the lower end surface of the slide plate 14. When the push rod 44 rotates with the scraper 17, the upper end of the push rod 44 is always in contact with the sliding plate 14, and the push rod 44 is not in contact with the mounting plate 15 during the rotation of the scraper 17.
When cylinder 6 on slide plate 14 promoted mounting panel 15 and moves down to scraper 18 and steel mesh 2 counterbalance, the distance between slide plate 14 and the mounting panel 15 grow, make push rod 44 rebound under the effect of second spring 27, make push rod 44 promote the outer end of pry bar 42 through sleeve 43 and upwards perk, make the other end of pry bar 42 drive connecting rod 45 and move down, and drive and hold cream board 40 and scraper 18 and separate, make and hold cream board 40 and be in a cream state, and hold and leave certain clearance between cream board 40 and the steel mesh 2.
When the air cylinder 6 on the sliding plate 14 drives the mounting plate 15 to move upwards to separate the scraper 18 from the steel mesh 2, the distance between the sliding plate 14 and the mounting plate 15 becomes small, the push rod 44 moves downwards, and the prying rod 42 is pried, so that the connecting rod 45 is driven by one end of the prying rod 42 connected with the connecting rod 45 to move upwards, when the connecting rod 45 drives the paste bearing plate 40 to be in a paste bearing state against the scraper 18, part of the solder paste is received on the paste bearing plate 40, the mounting plate 15 stops moving upwards at the moment, and the paste scraping state and the paste collecting state of the two scraper plates 16 start to be switched, so that part of the solder paste at the edge can be driven to a paste scraping path close to the middle part in the switching process.
The implementation principle of the encapsulation equipment for the MiniLED in the embodiment of the application is as follows:
when the scraper 18 in the paste scraping state scrapes the solder paste on the paste scraping path, the scraper 18 and the scraper 17 in the paste collecting state can collect the solder paste on the paste scraping path, so that the solder paste is not easy to be discharged from two sides of the scraper plate 16, and the utilization rate of the solder paste is improved; meanwhile, when the doctor blade 16 is switched between the paste discharging state and the paste scraping state, the paste bearing plate 40 can move the solder paste partially on the paste scraping path to a position close to the middle part of the paste scraping path, so that the solder paste is distributed more uniformly.
The embodiment of the application also discloses a MiniLED packaging method. The method comprises the following steps:
the method comprises the following steps: placing the substrate on a platform 4 of a workbench 3, moving the workbench 3 until the substrate is positioned below the steel mesh 2, aligning the meshes of the steel mesh 2 with the bonding pads of the substrate, and then lifting the platform 4 to enable the substrate to be attached to the lower end of the steel mesh 2;
step two: pouring solder paste onto the steel mesh 2, then starting the cylinder 6 to enable the scraper 18 to abut against the steel mesh 2, scraping the solder paste of the steel mesh 2 in one direction by using the scraper 17 in a paste scraping state, enabling the solder paste to fall onto a basic bonding pad through the steel mesh 2, after one-time paste scraping is completed, starting the cylinder 6 again to enable the cylinder 6 to drive the mounting plate 15 to move upwards, enabling the scraper 18 to move above the steel mesh 2, then driving the driving gear 37 to rotate by a power source, enabling the driving gear 37 to drive the two gear sets to rotate, enabling the two scraper 17 in the paste scraping state to be converted into a paste collecting state, and enabling the two scraper 17 in the paste collecting state to be converted into a paste scraping state;
step three: and descending the platform 4, moving the workbench 3 out, taking out the substrate, and correspondingly placing the MiniLED at the bonding pad of the substrate so that the MiniLED is connected onto the substrate.
The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The encapsulation equipment for the MiniLED comprises an encapsulation printer, wherein the encapsulation printer comprises a rack (1), a steel mesh (2) horizontally arranged in the rack (1), and a workbench (3) horizontally arranged below the steel mesh (2) in a sliding manner, and a platform (4) for placing a substrate is arranged on the workbench (3); the method is characterized in that: a guide rail (13) is horizontally arranged above the steel mesh (2) of the rack (1), and a scraper (18) mechanism and a driving mechanism for driving the scraper (18) mechanism to move along the guide rail (13) are mounted on the guide rail (13);
the scraper (18) mechanism comprises a sliding plate (14), a mounting plate (15) horizontally arranged below the sliding plate (14) and two scraper plates (16) vertically arranged on the lower end face of the mounting plate (15) at intervals, one end, close to the mounting plate (15), of the sliding plate (14) is fixedly connected with an air cylinder (6), and a piston rod of the air cylinder (6) is vertically and fixedly connected with one side, close to the sliding plate (14), of the mounting plate (15);
the scraper plate (16) comprises two scraper plates (17) spliced in half, a scraper (18) is arranged on the lower end face of each scraper plate (17), one end, close to each scraper plate (17), of each scraper plate is vertically connected with a telescopic rod (23) extending towards the other scraper plate (16), each telescopic rod (23) comprises a sleeve (24) fixedly connected with each scraper plate (17) and an inner rod (25) connected into the corresponding sleeve (24) in a sliding mode, an elastic piece used for driving the inner rod (25) to stretch out is arranged in each sleeve (24), and a limiting structure used for preventing the inner rod (25) from separating from the corresponding sleeve (24) is arranged between each sleeve (24) and each inner rod (25);
two limiting strips (32) vertical to the guide rail (13) are arranged on the lower end face of the mounting plate (15); the two scraper plates (16) are arranged between the two limiting strips (32);
one end of the inner rod (25) is vertically connected with a rotating rod (31) which extends upwards, the rotating rod (31) is rotatably connected with the mounting plate (15), and the mounting plate (15) is provided with a turnover mechanism which is used for driving the two rotating rods (31) on the scraper plate (16) to synchronously rotate; the turnover mechanism can drive the two scrapers (17) on the scraper plate (16) to rotate to a paste scraping state in which the scrapers are parallel to and abutted against the limiting strips (32) and to a paste collecting state in which the scrapers (17) are perpendicular to and abutted against the other limiting strip (32); the turnover mechanism comprises two gear sets, each gear set comprises a driving gear (33) and a driven gear (34) which are the same in size, the driving gear (33) and the driven gear (34) are respectively and fixedly connected with two rotating rods (31) on the scraper plate (16), and the driven gears (34) and the driving gears (33) are meshed with each other; the turnover mechanism further comprises a driving gear (37) and a power source for driving the driving gear (37) to rotate, and the driving gear (37) is respectively meshed with driving gears (33) of the two gear sets; when the two scraping plates (17) on one scraping plate (16) are in a paste scraping state, the two scraping plates (17) on the other scraping plate (16) are in a paste collecting state, and the two scraping plates (17) in the paste collecting state are abutted to the side, far away from the two scraping plates (17) in the paste scraping state.
2. A packaging apparatus for MiniLED according to claim 1, wherein: the scraper (18) is close to one side horizontal extension of telescopic link (23) has two bracing pieces (39), rotates between two bracing pieces (39) and is connected with and holds cream board (40), hold cream board (40) and can upwards overturn to hold cream state and overturn downwards to the play cream state of separating with scraper (18) that offsets with scraper (18) level, set up rectangular hole (41) that run through scraper (17) in scraper (17), rotate in rectangular hole (41) and be connected with pinch bar (42), the one end that pinch bar (42) stretched into scraper (17) inboard rotates and is connected with connecting rod (45), the one end that pinch bar (42) were kept away from to connecting rod (45) rotates with the one end that holds cream board (40) and is close to scraper (18) and is connected, pinch bar (42) stretches out one end cover in the scraper (17) outside and is equipped with sleeve (43), one side that scraper (17) kept away from connecting rod (45) is provided with push rod (44) that slides from and down along scraper (17) direction of height, one end of the push rod (44) is rotatably connected with the outer side of the sleeve (43), and a driving piece for driving one end of the push rod (44) to always abut against the lower end face of the sliding plate (14) is arranged on the scraper (17); when the mounting plate (15) moves downwards until the scraper (18) is abutted against the steel mesh (2), the push rod (44) drives the sleeve (43) to move upwards and enables the paste bearing plate (40) to be in a paste discharging state.
3. A packaging apparatus for MiniLED according to claim 1, wherein: a protruding ring (28) is arranged on the outer peripheral side of one end, away from the rotating rod (31), of the inner rod (25), the sleeve (24) comprises a sliding groove (29) for the protruding ring (28) to be connected in a sliding mode, and the limiting structure is a limiting ring (30) which is arranged on a notch of the sliding groove (29) and used for preventing the protruding ring (28) from being separated from the sliding groove (29).
4. A packaging apparatus for MiniLED according to claim 3, wherein: the elastic part is a first spring (26) arranged in the sliding groove (29), one end of the first spring (26) is abutted against the groove bottom of the sliding groove (29), and the other end of the first spring is abutted against the inner rod (25).
5. A packaging apparatus for MiniLED according to claim 2, wherein: one side of the scraper (17) far away from the connecting rod (45) is provided with a supporting block (48), and the supporting block (48) is provided with a through hole (46) for the push rod (44) to be connected in a sliding manner in a penetrating manner.
6. A packaging apparatus for MiniLED according to claim 5, wherein: the outer side of the push rod (44) is provided with a support ring (47), the driving piece is a second spring (27) sleeved on the push rod (44), one end of the second spring (27) is abutted to the support block (48), the other end of the second spring is abutted to the support ring (47), and the second spring (27) always pushes the support ring (47) to move towards the direction of the sliding plate (14).
7. A packaging apparatus for MiniLED according to claim 1, wherein: the one end integrated into one piece that two scrapers (18) of scraper board (16) kept away from mutually has oblique stifled sword (38), scrape oblique stifled sword (38) of cream state and can offset with scraper (18) inboard that is in receipts cream state for the gap between shutoff two state scrapers (18).
8. A MiniLED packaging method comprising the MiniLED packaging apparatus of any one of claims 1-7, wherein: the method comprises the following steps:
the method comprises the following steps: placing the substrate on a platform (4) of a workbench (3), and moving the workbench (3) until the substrate is attached below the steel mesh (2) so that the meshes of the steel mesh (2) are aligned with the bonding pads of the substrate;
step two: pouring solder paste onto the steel mesh (2), starting the cylinder (6), enabling the scraper (18) to abut against the steel mesh (2), scraping the solder paste of the steel mesh (2) towards one direction by utilizing the scraper (17) in a paste scraping state, enabling the solder paste to fall onto a basic bonding pad through the steel mesh (2), after one-time paste scraping is completed, starting the cylinder (6) again, enabling the cylinder (6) to drive the mounting plate (15) to move upwards, enabling the scraper (18) to move to the position above the steel mesh (2), and then driving the driving gear (37) to rotate through the power source, enabling the driving gear (37) to drive the two gear sets to rotate, enabling the two scrapers (17) in the paste scraping state to be converted into a paste collecting state, and the two scrapers (17) in the paste collecting state to be converted into a paste scraping state;
step three: and taking out the substrate, and correspondingly placing the MiniLED at the bonding pad of the substrate so that the MiniLED is connected to the substrate.
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